After 10 years as his pain slut, Mark had grown tired of torturing Krysta. 

When they first met, she was just 26. Krysta was young, fit, and most importantly, had the alt look he was always into. She had tattoos scattered throughout her pale white skin, blue streaks dyed throughout her long dark hair, and piercings in the usual places for someone of her caliber.

They quickly hit it off, and Krysta moved in with him to be his full time pain slut. Krysta loved the torture. She’d always gotten off on the idea of a man like Mark using her body for his entertainment. Mark would spend every day finding new ways to use her.

Over the last 10 years, Mark had done just about everything to Krysta. He’d spanked, paddled, pierced, tattooed, pinched, bound, and fucked her in every rough way imaginable. She was used to it now though, and that was beginning to take away the fun. 

He stared closely at his slave, bound and blindfolded on a cross in the corner, brainstorming ways to move forward for both of them. Sending her off to someone else wasn’t an option. Not only did he still want to see out the rest of her days, but he’d taken the time to leave his mark on her. 

Krysta had a small handful of light scars from sessions that got rougher than anticipated. Plus, she also had a large colorful tattoo where her pubes once were, reading “MARKS PAIN SLUT” in large cursive letters. 

It was time for a new pain slave though, one that could keep Mark entertained and start from the beginning.  

Mark finally had it, he’d decided to automate her torture for the rest of her days…

—

It’d been 2 years since Krysta had been retired. Mark couldn’t have been happier enjoying his new slave, but Krysta was certainly going insane. 

Just inches below the basement floor, Krysta laid spread eagle, secured tightly to the concrete below by large steel cuffs riveted shut and bolted into the cement on each limb, as well as around her neck and waist. She was completely immobile.

A large piece of glass covered her, thick enough to allow Mark or anyone else to walk above her. Without her blindfold, even the view alone was a degrading psychological experience. 

However, when it was time for privacy or isolation, a simple switch would change the glass from transparent to frosted. To an unaware party, it was a unique white glass floor in the center of the room. But when switched back to transparent, you could see her body, red and sweaty, in constant agony. 

Krysta was covered in dozens and electrodes and sensors. They monitored everything from her health to her torture. But most importantly, the electrodes could inflict pain to any part of her body from head to toes.

In addition to the electrodes all over her, each of the nipple piercings worked as a nice electric conductor, as well as the one in her clit.

Her eyes were intentionally able to see the room above, but she was in complete silence down below. A ball gag inside her mouth kept her constantly drooling as she whimpered from the torture. A tube entered the center of it, connecting to a funnel in the corner of the room. Not only had she realized quickly it would be her only source of food, but also that Mark could still piss or spit down it whenever he liked. 

Another small tube wrapped around her head, pumping oxygen into her nose so she could breathe. However, it also worked nonstop keeping her awake and energized. 

Her holes weren’t forgotten though, inside her ass was a large steel butt plug. Not only could it electrocute her from the inside, but it also used attached hoses to insert and release enemas as Mark programmed. The hose would automatically push a set amount of liquid into her ass before shutting the valve. Krysta would be forced to hold it for however long until the system allowed release. Unfortunately for Krysta, it was usually quite a while, and never a comfortable experience.

Krysta was fitted with a catheter for urination, and her vagina was then stretched open too, but around a large dildo. However, at closer glance the dildo was covered in small studs that not only could shock her on the inside, but also caused discomfort as the speed increased. 

To Mark however, the best part wasn’t even the active torture devices, it was the passive ones. The machines could use sensors on her body and holes to detect if she was close to orgasm, and intentionally slow or stop any stimulation. 

It was no longer up to her, Krysta couldn’t cum even if she wanted to, the machines prohibited it. 

Krysta spent every day being tortured inside and out, trying to reach an orgasm that would never come. She laid there in shock at her new predicament. Staring up above as Mark trained and tortured his new pain slut.

One day, the new girl stopped to look down at Krysta, seeing the torture and pain in her eyes. She asked Mark what the girl could have possibly done to end up like that. 

Mark smiled, glancing down at the large bold tattoo he’d added just above her breasts, she’s “RETIRED”